LETTER: Why is work being re-done on motorway?

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I have read the recent online article regarding the delays to the M1 roadworks. 
I am a regular user of the M1 and I noticed that the recently completed work of installing the concrete barriers between the carriageways was recently being knocked down by the contractors.
Seemingly miles of recently completed work is having to be re-done. 
Has anyone looked into this apparent debacle or the added costs to the taxpayer?

M. Cooper

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